Solutions by
Performance
At ArcelorMittal Europe, we provide solutions with certified fire resistance performances in accordance with the most severe standards for testing at the European level:
- Facades, made of insulated sandwich panels, are certified for fire resistance in single storey buildings.
- Composite floor solutions, like Cofrastra®, are fire resistant up to two hours (REI120) without additonal protection.
- CoSFB® flooring solutions, combining the slim floor beam and composite floor concepts, are also fire resistant up to two hours (REI 120) without additional fire protection.
- In single storey public or residential buildings, the combination of our light steel framing solutions and plasterboard internal partitioning offers a suitable and competitive solution concerning fire resistance.
Our R&D department has extensive expertise in fire resistant steel solutions including fire engineering.
Solutions by
ApplicationFire resistance
As safety is a large part of ArcelorMittal’s core values, we constantly extend our range of products and solutions in order to satisfy the most demanding requirements with respect to fire resistance performance.
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Construction components are not tested for fire resistance performance. This performance requirement is only applicable to full building applications such as facades, doors, composite decking, or roofing.
However, products and components are key contributors to fire resistance performance.
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Product newsComposite flooring solution for Patershof Hotel: steel deck & extra light concrete
The site of the Martin's Patershof Hotel – the result of renovating and transforming a church into a four star hotel – was the first to implement an innovative solution combining composite flooring with lightweight concrete, namely Cofraplus® 77 LS, with Argex concrete consisting of expanded clay aggregates. This project was the culmination of nearly two years of research and development by ArcelorMittal Research Centre and the close attention paid by the engineers to ArcelorMittal Construction's prescription to meet the needs of the builder-promoter.
ArticleDIFISEK: Dissemination of Structural Fire Safety Engineering Knowledge
The DIFISEK: Dissemination of Structural Fire Safety Engineering Knowledge project was funded by the European Commission as part of the Research Fund for Coal and Steel.
Article
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Text:
ArcelorMittal Europe Communications
Images and video:
ArcelorMittal Tubular Products
Related link(s)
Composite flooring solution for Patershof Hotel: steel deck & extra light concrete
Text & photos: ©ArcelorMittal Construction
The site of the Martin's Patershof Hotel – the result of renovating and transforming a church into a four star hotel – was the first to implement an innovative solution combining composite flooring with lightweight concrete, namely Cofraplus® 77 LS, with Argex concrete consisting of expanded clay aggregates. This project was the culmination of nearly two years of research and development by ArcelorMittal Research Centre and the close attention paid by the engineers to ArcelorMittal Construction's prescription to meet the needs of the builder-promoter.
The aim of the Martin’s Patershof Hotel project was unique: to create, within the heart of a nineteenth century church in Mechelen, Belgium - a five-storeyed hotel with 77 rooms in a single framework. The renovation and transformation of the site was the first to apply composite flooring with lightweight concrete.
Composite flooring
Composite floor slab is a mixed construction system consisting of a steel sheet which serves as shuttering for concrete and reinforces the slab, totally or partially replacing the tensile reinforcements.
It is essential to achieve a bond between the steel and concrete that is stronger than the horizontal stresses to which the slab is exposed.
In this system, the concrete-steel bonding is achieved thanks to the special design of the steel sheets. These sheets are embossed with frustum-shaped projections, repeated indefinitely, both on their horizontal surfaces and on the sloping sides.
During assembly and concrete grouting, the self supporting steel deck constitutes a working platform.
A new solution for renovation
In new constructions, light flooring is particularly useful in multi-storeyed buildings because it significantly reduces the dead weight and lightens the structure and the foundations. But this product has also proved to be useful in renovation works where it is advisable not to overload the existing masonry beyond its limited bearing capacity. In addition, it enables increase in span length without forestay during the concrete grouting.
A solution suited for the Martin’s Patershof Hotel project
ArcelorMittal’s decision to use ArcelorMittal Construction's composite floor Cofraplus® 77 LS combined with Argex concrete is justified for several reasons. First, the configuration of the site required the manual transfer of all the materials through the entrance gate which was only 1.4 m wide.
Then, the thickness of the slab had to be 23 cm, taking the permissible dead weight by adding lightweight concrete up to 1.5 kN / m², which amounted to 450 tonnes for a floor space of 3000 m². The last reasoning was considered decisive by the contractor as the land on which the church is based does not allow the use of conventional composite floors.
The ultimate load bearing capacity was weak. Furthermore, the contractor wanted to avoid the use of concrete props in the middle of this dense structure with five floors.
Despite its well-known rigidity within the range of composite floors, Cofraplus® 77 did not have the permit to cross the limit of 3.2 m with 23 cm of normal concrete. The Argex concrete had the permit to do so. The project technicians used structural concrete with density ranging between 16 and 18 kN/m3 instead of 25 kN/m3. Hence, for a 15 cm thick slab, there was a reduction of about 1 kN / m².
An innovation that met all the objectives: stability and fire resistance for engineers in addition to approved planning and financial savings for the developer-contractor.
Related link(s)
DIFISEK: Dissemination of Structural Fire Safety Engineering Knowledge
The DIFISEK: Dissemination of Structural Fire Safety Engineering Knowledge project was funded by the European Commission as part of the Research Fund for Coal and Steel.
The aim of DIFISEK was to promote different projects from recent decades that dealt with fire engineering, the results of which were implemented in EN 1991-1-2.
- Part 1: Thermal & Mechanical Actions: Indication of fire scenarios: Nominal fire, parametric temperature time curve, zone models, CFD; mechanical actions in the fire situation
- Part 2: Thermal Response: Thermal conductivity, shadow effect, thermal material properties of steel and concrete, natural fire safety concept
- Part 3: Mechanical Response of Structures in Fire: Mechanical material properties of steel and concrete, member verification, analysis of entire structure, constructional details, characteristics of natural fire
- Part 4: Software for Fire Design: Free available software, description, and evaluation for different fields of application
- Part 5a: Worked Examples: Worked examples for fire scenarios, heating of members, member verification
- Part 5b: Illustration of Completed Projects: Completed buildings with special regard to the fire safety concept
Related link(s)
Dissemination of Fire Safety Engineering Knowledge DIFISEK - website
DIFISEK Part 5b: Completed Buildings - Fire Safety
DIFISEK Part 5a: WorkedExamples
DIFISEK Part 4: Software for Fire Design
DIFISEK Part 3: Mechanical Response